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KNIFE GATE VALVE PN10 S-GATE Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12 Page 1 sur 15 Information provided as an indication and subject to possible modification R R E E F F . . 1 1 7 7 0 0 - - 1 1 7 7 1 1 - - 1 1 7 7 2 2 Size : Ends : Min Temperature : Max Temperature : DN 50 to DN 800 Between flanges PN10 -10°C for NBR seat ( -15°C for EPDM ) + 90°C for NBR seat ( + 110°C for EPDM ) Max Pressure : 10 Bars up to DN 200 Specifications : Rising rotating stem , non rising handwheel Unidirectional tightness Weak head loss Materials : Cast iron or Stainless steel Certificate 3.1

FT 170 171 172 2013 ANG - TERMO DINAMIC CUTIT 170-171... · 2017. 2. 14. · KNIFE GATE VALVE PN10 S-GATE Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90

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  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 1 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    Size : Ends :

    Min Temperature : Max Temperature :

    DN 50 to DN 800 Between flanges PN10 -10°C for NBR seat ( -15°C for EPDM ) + 90°C for NBR seat ( + 110°C for EPDM )

    Max Pressure : 10 Bars up to DN 200Specifications : Rising rotating stem , non rising handwheel

    Unidirectional tightness

    Weak head loss

    Materials : Cast iron or Stainless steel

    Certificate 3.1

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 2 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    SPECIFICATIONS :

    Opened or closed valve Rising rotating stem, non rising handwheel Unidirectional tightness ( Respect the flow direction indicated by the arrow ) Weak head loss Between flanges PN10 Full crossing threaded lower holes and blind threaded top holes With handwheel With lever or chain handwheel ( option ) Possible with bipolar sensor O + C , voltage AC 15-240V 3A, IP66 type XCK M115C Deflector ( option ) 50% epoxy 50% polyester painting blue colour RAL 5005 Other seats on request ( FKM, PTFE, SILICONE …)

    USE :

    Water, water treatment, chemical pulp, powders, food industry, chemistry Min and max Temperature Ts : - 10°C to + 90°C for cast iron body with NBR seat Ref.170 Min and max Temperature Ts : - 15°C to + 110°C for cast iron body with EPDM seat Ref.171 Min and max Temperature Ts : - 15°C to + 110°C for stainless steel body with EPDM seat Ref.172 Min and max Temperature Ts : - 15°C to + 110°C with WHITE EPDM seat( on request ) Min and max Temperature Ts : - 10°C to + 180°C with FKM seat( on request ) Min and max Temperature Ts : + 0°C to + 180°C with PTFE seat ( on request ) Min and max Temperature Ts : - 20°C to + 200°C with SILICONE seat ( on request ) When using powders, inverse flow direction

    MAX PRESSURE :

    DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700-800

    Ps (Bars) 10 10 10 10 10 10 10 8 6 4 4 3 3 3 2 MIN AND MAX SEAT TEMPERATURES WITH REFERENCES :

    SEAT TEMPERATURE DN 50 DN 65 DN 80 DN 100 DN 125 DN 150 DN 200 DN 250 DN 300

    NBR -10°C à +90°C 9801851 9801852 9801853 9801854 9801855 9801856 9801857 9801858 9801859

    EPDM -15°C à +110°C 9801870 9801871 9801872 9801873 9801874 9801875 9801876 9801877 9801878 WHITE EPDM -15°C à +110°C 9802170 9802171 9802172 9802173 9802174 9802175 9802176 9802177 9802178

    FKM -10°C à +180°C 9801910 9801911 9801912 9801913 9801914 9801915 9801916 9801917 9801918 PTFE +0°C à +180°C 9801890 9801891 9801892 9801893 9801894 9801895 9801896 9801897 9801898

    SILICONE -20°C à +200°C 9801930 9801931 9801932 9801933 9801934 9801935 9801936 9801937 9801938

    SEAT TEMPERATURE DN 350 DN 400 DN 450 DN 500 DN 600 DN 700

    NBR -10°C à +90°C 9801860 9801861 9801862 9801863 9801864 9801865

    EPDM -15°C à +110°C 9801879 9801880 9801881 9801882 9801883 9801884 WHITE EPDM -15°C à +110°C 9802179 9802180 9802181 9802182 9802183 9802184

    FKM -10°C à +180°C 9801919 9801920 - - - - PTFE +0°C à +180°C 9801899 9801900 - - - -

    SILICONE -20°C à +200°C 9801939 9801940 - - - -

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 3 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    RANGE AND ACCESSORIES :

    Between flanges PN10 cast iron body, SS 304 gate , NBR seat, with handwheel Ref. 170 from DN 50 to DN 800

    Between flanges PN10 cast iron body, SS 304 gate, EPDM seat, with handwheel Ref. 171 from DN 50 to DN 800

    Between flanges PN10 , CF8M body, SS 316 gate , EPDM seat, with handwheel Ref. 172 from DN 50 to DN 600

    Between flanges PN10 cast iron body, SS 304 gate , NBR seat, with handwheel and sensor Ref. 170101 to 170801 from DN 100 to DN 800

    Bipolar sensors O + C kit Ref. 9801351 and 9801352 from DN 50 to DN 300

    Sensor (alone) Ref. 9801350 from DN 50 to DN 700

    Chain handwheel Ref. 9801790-9801792 from DN 50 to DN 600

    Chain ( per meter ) Ref. 9801795

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 4 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    RANGE AND ACCESSORIES ( SUITE ) :

    Lever Ref. 980178 from DN 50 to DN 300

    SS ASTM A351 CF8M Deflector Ref. 9801800 to 9801813 from DN 50 to DN 600

    SS ASTM A351 CF8M Deflector kit ( with flange gasket ) Ref. 9801820 to 9801837 from DN 50 to DN 600

    Stainless steel support with bolting Ref. 9802001 to 9802011 from DN 50 to DN 400

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 5 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    (*) : Included in seat seal kit (+) : Included in packing gland kit

    MATERIALS WITH HANDWHEEL ( REF. 170 , 171 AND 172 ) :

    Item Designation Materials Ref. 170 Materials Ref. 171 Materials Ref. 172

    1 Body Cast iron EN GJL-250 Cast iron EN GJL-250 ASTM A351 CF8M

    2 Gate AISI 304 AISI 304 AISI 316

    3 Packing gland nut Ductile iron EN GJS-400-15 Ductile iron EN GJS-400-15 ASTM A351 CF8M

    4(*) Seat NBR EPDM EPDM

    5 Support Painted steel Painted steel Painted steel

    6(*) Retainer AISI 304 AISI 304 AISI 316

    7(+) Packing (Tress) PTFE PTFE PTFE

    8(+) Packing ( O ring ) NBR EPDM EPDM

    9 Yoke Steel Steel Steel

    10 Greaser Brass Brass Brass

    11 Fixing screw Steel Steel Steel

    12 Hood Steel Steel Steel

    13 Hood cover Plastic Plastic Plastic

    14 Spindle AISI 304

    15 Stem nut Bronze Bronze Bronze

    16 Handwheel Steel Steel Steel

    17 Washer Brass Brass Brass

    18 Upper screw Steel Steel Steel

    19 Lower screw Steel Steel Stainless steel

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 6 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    (*) : Included in seat seal kit (+) : Included in packing gland kit

    MATERIALS WITH CHAIN HANDWHEEL :

    Item Designation Materials Ref. 170 + 980179 Materials Ref. 171 + 980179 Materials Ref. 172 + 980179

    1 Body Cast iron EN GJL-250 Cast iron EN GJL-250 ASTM A351 CF8M

    2 Gate AISI 304 AISI 304 AISI 316

    3 Packing gland nut Ductile iron EN GJS-400-15 Ductile iron EN GJS-400-15 ASTM A351 CF8M

    4(*) Seat NBR EPDM EPDM

    5 Support Painted steel Painted steel Painted steel

    6(*) Retainer AISI 304 AISI 304 AISI 316

    7(+) Packing (Tress) PTFE PTFE PTFE

    8(+) Packing ( O ring ) NBR EPDM EPDM

    9 Yoke Steel Steel Steel

    10 Oil hole Steel Steel Steel

    11 Fixing screw Steel Steel Steel

    12 Hood Steel Steel Steel

    13 Hood cover Plastic Plastic Plastic

    14 Spindle AISI 304

    15 Stem nut Bronze Bronze Bronze

    16 Handwheel Steel Steel Steel

    17 Washer Brass Brass Brass

    18 Fixing screw AISI 304

    19 Chain guide Cast iron Cast iron Cast iron

    20 Washer Brass Brass Brass

    21 Chain Steel or stainless steel Steel or stainless steel Steel or stainless steel

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 7 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    (*) : : Included in seat seal kit (+) : : Included in packing gland kit

    MATERIALS WITH LEVER :

    Item Designation Materials Ref. 170 + 980178 Materials Ref. 171 + 980178 Materials Ref. 172 + 980178

    1 Body Cast iron EN GJL-250 Cast iron EN GJL-250 ASTM A351 CF8M

    2 Gate AISI 304 AISI 304 AISI 316

    3 Packing gland nut Ductile iron EN GJS-400-15 Ductile iron EN GJS-400-15 ASTM A351 CF8M

    4(*) Seat NBR EPDM EPDM

    5 Support Painted steel Painted steel Painted steel

    6(*) Retainer AISI 304 AISI 304 AISI 316

    7(+) Packing (Tress) PTFE PTFE PTFE

    8(+) Packing ( O ring ) NBR EPDM EPDM

    9 Yoke Steel Steel Steel

    10 Oil hole Steel Steel Steel

    11 Stem nut Bronze Bronze Bronze

    12 Spindle AISI 304

    13 Fixing screw Steel Steel Steel

    14 Wedge Steel Steel Steel

    15 Link Steel Steel Steel

    16 Lever Steel Steel Steel

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 8 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    SIZE WITH HANDWHEEL REF.170-171-172 ( in mm ) :

    DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800

    E 40 40 50 50 50 60 60 70 70 96 100 106 110 110 110 110

    H 289 316 342 382 415 458 575 676 776 906 1012 1098 1210 1416 1611 1870

    H1 409 436 462 502 585 637 815 1016 1116 1336 1442 1628 1740 2046 2461 2820

    H2 63 70 92 105 120 130 160 198 234 256 292 308 340 400 452 505

    L1 124 139 154 174 192 217 270 326 380 438 493 546 620 714 830 970

    L2 92 92 92 92 102 102 119 119 119 290 290 290 290 290 320 320

    Ø V 200 200 200 200 250 250 300 300 300 500 500 500 500 500 800 800

    Weig. Ref.170 and 171 (Kg) 6.53 7.1 8.53 9.8 12.7 16.16 26.8 43.5 57.5 108 132 170 210 298 446 524

    Weig. Ref.172(Kg) 6.52 7.81 8.48 10.06 12.7 15.8 27.8 44.6 58.6 110 150 170 210 298 - -

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 9 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    SIZE WITH CHAIN HANDWHEEL REF.170-171-172 + 980179 ( in mm ) :

    Chain size :

    Handwheel size :

    DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600

    E 40 40 50 50 50 60 60 70 70 96 100 106 110 110

    H 289 316 342 382 415 458 575 676 776 906 1012 1098 1210 1416

    H1 409 436 462 502 585 637 815 1016 1116 1336 1442 1628 1740 2046

    H2 63 70 92 105 120 130 160 198 234 256 292 308 340 400

    L1 124 139 154 174 192 217 270 326 380 438 493 546 620 714

    L2 92 92 92 92 102 102 119 119 119 290 290 290 290 290

    Ø V 212 212 212 212 212 212 296 296 296 482 482 482 482 482

    Ø Y 34 34 34 34 34 34 42 42 42 52 52 52 52 52

    C 26 26 26 26 26 26 34 34 34 44 44 44 44 44

    L3 135 135 135 135 135 135 180 180 180 278 278 278 278 278

    Weig. Ref.170 or 171 + 980179 ( Kg ) 11.4 12 13.4 14.7 17.6 21 34.3 51 65 122.5 146.5 184.5 224.5 312.5

    Weig. Ref.172 + 980179 ( Kg 11.4 12.7 13.4 14.9 17.6 20.7 35.3 52.1 66.1 124.5 164.5 - - -

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 10 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    SIZE WITH LEVER REF.170-171-172 + 980178 ( in mm ) : H3c : Height closed valve H3o : Height opened valve

    DN 50 65 80 100 125 150 200 250 300

    E 40 40 50 50 50 60 60 70 70

    H 240 265 290 335 373 424 533 625 732

    H1 125 125 125 125 170 170 190 285 285

    H2 63 70 92 105 120 130 160 198 234

    H3c (closed) 248 263 277 329 301 262 526 338 248

    H3o (opened) 452 526 592 704 858 911 1210 1318 1762

    H4 343 370 389 436 511 563 676 868 986

    L1 124 139 154 174 189 220 275 326 380

    L2 83 83 83 83 93 93 108 108 108

    L3 140 140 140 140 140 140 230 230 230

    L4 340 340 340 340 440 440 640 680 680

    L5 330 330 330 330 430 430 630 630 882

    L6 156 156 156 156 156 156 247 247 249

    Weig. Ref.170,171 or 172+ 980178 (Kg) 8.9 9.8 11 13.3 16 18.9 32.9 53.6 67.3

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 11 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    SIZE FIXING VALVE THREADED HOLES ( BETWEEN FLANGES PN10 in mm ) : DN 50 – 65 DN 80 – 200 DN 250 - 300 DN 350 – 400 DN 450 – 600 DN 700-800

    THREADED LENGHT FOR TOP BLIND HOLES :

    DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800

    Ø K 125 145 160 180 210 240 295 350 400 460 515 565 620 725 840 950

    Ø M M16 M16 M16 M16 M16 M20 M20 M20 M20 M20 M24 M24 M24 M27 M27 M30

    Nb threaded hole 4 4 4 4 4 4 4 8 8 10 10 14 14 14 16 16

    A 8 8 10 10 10 12 12 15 15 19 20 24 24 22 22 20

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 12 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    DEFLECTOR SIZE ( in mm ) :

    DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600

    Ø A 90 105 120 145 170 195 250 310 365 420 472 527 582 683

    Ø C 32 47.5 59.5 78.5 104.5 127.5 178.5 226.5 278.5 323.5 374 402.7 451.7 552.7

    Ø D 44 59.5 73.5 92.5 118.5 141.5 192.5 240.5 292.5 339.5 390 423.4 472.4 573.4

    Ø E 48 63 78 98 123 148 198 247 297 347 397 447 497 597

    B 6 6 7 7 7 7 7 7 7 8 8 10 10 8

    L 14 14 19 19 18.5 23.5 22.5 27 26 39 40 44 46 44

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 13 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    SENSOR SIZE ( in mm ) AND SCHEMA :

    Bipolar sensor O + C ( XE2S P2151 )

    STANDARDS :

    Fabrication according to ISO 9001 : 2008

    DIRECTIVE 97/23/CE : Risk category I Module A

    Certificate 3.1 on request

    Pressure test according to ISO 5208, Range A

    Between flanges PN10 according to EN 1092-1 PN10 ADVICE : Our opinion and our advice are not guaranteed and SFERACO shall not be liable for the consequences of damages. The customer must check the right choice of the products with the real service conditions.

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 14 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    INSTALLATION INSTRUCTIONS :

    GENERAL GUIDELINES :

    Ensure that the valves to be used are appropriate for the conditions of the installation (type of fluid,pressure and temperature).

    Be sure to have enough valves to be able to isolate the sections of piping as well as the appropriate equipment for maintenance and repair.

    Ensure that the valves to be installed are of correct strenght to be able to support the capacity of their usage.

    Installation of all circuits should ensure that their function can be automatically tested on a regular basis (at least two times a year).

    INSTALLATION INSTRUCTIONS :

    Before installing the valves,clean and remove any objects from the pipes (in particular bits of sealing and metal) which could obstruct and block the valves.

    Ensure that both connecting pipes either side of the valve (upstream and downstream) are aligned (if they’re not,the valves may not work correctly).

    Make sure that the two sections of the pipe (upstream and downstream) match,the valve unit will not absorb any gaps.Any distortions in the pipes may affect the thightness of the connection,the working of the valve and can even cause a rupture.To be sure,place the kit in position to ensure the assembling will work.

    If sections of piping do not have their final support in place,they should be temporarily fixed.This is to avoid unnecessary strain on the valve.

    During installation operation , do not carry the valves by the handwheel. Valves can be installed in all positions but we recommend the above positions :

    Correct Position Tempo. Position

    Bad Position

  • KKNNIIFFEE GGAATTEE VVAALLVVEE PPNN1100 SS--GGAATTEE

    Sferaco 90 rue du Ruisseau 38297 St Quentin Fallavier Tel: + 33 (0) 474.94.15.90 Fax: + 33 (0) 474.95.62.08 Internet: www.sferaco.fr E-mail : [email protected] Date : 01/17 Rev.12

    Page 15 sur 15 Information provided as an indication and subject to possible modification

    RREEFF.. 117700--117711--117722

    INSTALLATION INSTRUCTIONS ( SUITE ) :

    If the valve is installed at the end of the pipe, it must be between 2 flanges. The knife gate valves are unidirectional, respect the flow direction indicated on the body by the arrow.

    When using powders, inverse flow direction Tighten the bolts in cross. For blind holes, use studs to have a good tightening and tighten them carrefully

    so that they don’t touch the gate. During cleaning operation, the valves must be opened. Tests must be done with cleaned installation and pipe. Test must be done with partially opened valve. Test pressure must not exceed valve specification

    according to ISO 5208. Open carrefully the valve. Tighten the gland packing at the first start of the installation ( with a moderate torque ) so that there’s no

    leakage and the handwheel is easy to operate. Make sure there’s no contact between the gate and the gland.

    Keep greased the stem. It’s recommended to operate the valve ( open and close ) 1 time per month